3554 Amun
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3554 Amun is an Aten asteroid, meaning it crosses Earth's orbit, and a Venus-crosser. It was discovered on 4 March 1986 by Carolyn and Eugene Shoemaker at Mount Palomar Observatory, and named for the ancient Egyptian deity Amun.[1] Amun was the fifth Aten asteroid to be numbered.
Photometric observations of 3554 Amun during 2017–2018 were combined to determine a rotation period of 2.53029±0.00002 hours.[2] It has been classified as an M-type asteroid in the Tholen taxonomy, X-type in the Bus taxonomy, and C-, X-, and D-type in the Bus-DeMeo taxonomy. The featureless optical spectrum has a similar slope to the Tagish Lake meteorite, although 3554 Amun is not considered the source.[3] The infrared spectrum of 3554 Amun was found to match a D-type asteroid taxonomy.[4] The estimated diameter is 3.341 kilometers,[5] making it one of the smallest known asteroids to have an M-type classification.Script error: No such module "Unsubst".
Amun was once considered metallic, based on an M-type optical spectrum. In Mining the Sky, planetary scientist John S. Lewis calculated the purported value of a metallic 3554 Amun at $20 trillion.[6] (6178) 1986 DA is another M-type near-Earth asteroid with lower inclination that is actually metallic.
Amun passes close to Venus, and in 1964, 2034, and 2103 comes within 10 million km of it.[5]
References
External links
- Economic value of asteroid 3554 Amun
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- Template:PAGENAMEBASE at the JPL Small-Body DatabaseTemplate:EditAtWikidata
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